54 lines
1.0 KiB
C++
54 lines
1.0 KiB
C++
// Copyright (C) 2013 Jérôme Leclercq
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// This file is part of the "Nazara Engine - Core module"
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// For conditions of distribution and use, see copyright notice in Config.hpp
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#include <Nazara/Core/MemoryStream.hpp>
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#include <algorithm>
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#include <cstring>
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#include <Nazara/Core/Debug.hpp>
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NzMemoryStream::NzMemoryStream(const void* ptr, nzUInt64 size) :
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m_ptr(reinterpret_cast<const nzUInt8*>(ptr)),
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m_pos(0),
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m_size(size)
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{
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}
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NzMemoryStream::~NzMemoryStream()
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{
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}
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bool NzMemoryStream::EndOfStream() const
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{
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return m_pos == m_size;
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}
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nzUInt64 NzMemoryStream::GetCursorPos() const
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{
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return m_pos;
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}
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nzUInt64 NzMemoryStream::GetSize() const
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{
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return m_size;
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}
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std::size_t NzMemoryStream::Read(void* buffer, std::size_t size)
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{
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unsigned int readSize = std::min(static_cast<unsigned int>(size), static_cast<unsigned int>(m_size-m_pos));
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if (buffer)
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std::memcpy(buffer, &m_ptr[m_pos], readSize);
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m_pos += readSize;
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return readSize;
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}
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bool NzMemoryStream::SetCursorPos(nzUInt64 offset)
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{
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m_pos = std::min(offset, m_size);
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return true;
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}
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